With infinite care, he took a drop or two from the grounds in each cup, sealing them up in separate test tubes, tasting each in turn as he did so. His physiognomy underwent a curious change.

他非常小心地从每个杯子里的咖啡渣中取出一两滴，将它们密封在不同的试管中，一边依次品尝。他的相貌发生了奇怪的变化。